Add a way to force alignment in JitSafeMem().
Implement lwl/lwr in the x86 jit.
Add swl/swr to the x86 jit.
Implement clz/clo in x86 jit.
Implement vmone/vmzero/vmidt for the x86 jit.
Handle the immediate case of clz/clo.
Merge pull request #2622 from unknownbrackets/jit-loadstore

Implement left/right load/store, clz/clo, and vmone/vmzero/vmidt in x86 jit